GROUNDWORK — 21V478000: Bonding between the carbon-fiber driveshaft and the flange may be insufficient, which could result in driveshaft separation MERCEDES-BENZ AMG GT: check the listed vehicles, the reported issue and the manufacturer remedy for 21V478000. Keep the official status and service answers in one private record. Campaign: 21V478000 Official record checked: 2026-10-19T20:40:23.751Z Official campaign: https://api.nhtsa.gov/recalls/campaignNumber?campaignNumber=21V478000 Official VIN lookup: https://www.nhtsa.gov/recalls LISTED VEHICLES (VIN confirmation required) 2018 MERCEDES-BENZ AMG GT 2017 MERCEDES-BENZ AMG GT 2016 MERCEDES-BENZ AMG GT OFFICIAL REPORTED ISSUE Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2016-2018 AMG GT vehicles. The bonding between the carbon-fiber driveshaft and the flange may be insufficient, which could result in driveshaft separation. OFFICIAL REPORTED CONSEQUENCE A separated driveshaft may cause a loss of drive power, increasing the risk of a crash. OFFICIAL REPORTED REMEDY Dealers will inspect and replace the carbon-fiber driveshaft, as necessary, free of charge. Owner letters were mailed October 15, 2021. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2021090008. OFFICIAL NOTES Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.nhtsa.gov. OWNER PREPARATION Record an existing symptom and its date. Do not reproduce a loss of power, stall or transmission fault in traffic. REMEDY TIMING IN THE DATED SOURCE Confirm current remedy arrangements The source does not explicitly establish current remedy availability. Ask the manufacturer about the applicable remedy, required parts or software, appointment arrangements and any interim instructions. Current availability for your VIN: unconfirmed. YOUR SERVICE QUESTIONS 1. Does the manufacturer confirm that campaign 21V478000 applies to this VIN, including the report’s equipment and production restrictions? A matching model and year is only a starting point. The official lookup or manufacturer must establish the individual vehicle’s status. Discussion status / answer: __________ 2. What remedy, required parts or software, and appointment arrangements are currently available for this VIN, and which interim instructions apply? The source does not explicitly establish current remedy availability. Ask the manufacturer about the applicable remedy, required parts or software, appointment arrangements and any interim instructions. Discussion status / answer: __________ 3. Which engine or transmission component is covered, and does an existing drivability problem need separate diagnosis? Compare the answer with the reported component: POWER TRAIN:DRIVELINE:DRIVESHAFT. Discussion status / answer: __________ 4. If an inspection determines which work is needed, what was inspected, what was found, and which corrective work followed? Ask for the inspection result as well as the final action. A parts list alone may not describe an inspection-based remedy. Discussion status / answer: __________ 5. Which items in the reported replacement remedy for 21V478000 were replaced, and are they identified on the work order? Keep the replaced items and the campaign number together so that a later visit can distinguish recall work from other repairs. Discussion status / answer: __________ 6. What dated document records the remedy performed under 21V478000, and what should I do if the reported concern remains? Keep campaign completion and unresolved symptoms as separate questions. A saved worksheet or booked appointment does not establish a repair. Discussion status / answer: __________ OFFICIAL LOOKUP DECISIONS Not checked or unavailable: eligibility remains unconfirmed; use the official lookup or manufacturer. Campaign listed as open: confirm current instructions, availability and remedy arrangements. Campaign not listed as open: reconcile repair history and lookup coverage with the manufacturer if needed. A zero-open result does not diagnose symptoms. Work order records completed recall work: keep the exact campaign and dated remedy record; report unresolved symptoms separately. YOUR RECORD Check date: __________ Official lookup result: __________ Service arrangement: __________ Existing observation: __________ Questions and work-order notes (no VIN or plate needed): __________ LOOKUP LIMITS A model/year match does not establish VIN eligibility. The official lookup may omit completed recalls, some recent campaigns or recalls outside its coverage. The listed defect does not prove the cause of a symptom on your vehicle. This guide supports owner preparation and does not provide a repair procedure.